Applied Physics I Past Paper 2021 PDF

TED (21) -1003 2102220006 A Reg.No………………............. (Revision- 2021) Signature.................................. DIPLOMA EXAMINATION IN ENGINEERING/TECHNOLOGY/MANAGEMENT/ COMMERCIAL PRACTIC...

TED (21) -1003 2102220006 A Reg.No………………............. (Revision- 2021) Signature.................................. DIPLOMA EXAMINATION IN ENGINEERING/TECHNOLOGY/MANAGEMENT/ COMMERCIAL PRACTICE –NOVEMBER -2021. APPLIED PHYSICS - I (Maximum Marks : 75) [Time : 3 hours] PART–A Marks I. Answer all the following questions in one word or sentence (9x1 = 9 Marks) Module Cognitive Outcome level 1 The standard used for the specification of a physical quantity is called ………………… M1.01 R 2 If two vectors A and B are in the same direction, then the magnitude of their resultant, R= ……………… M1.03 U 3 In the case of Earth revolving around the Sun, the centripetal force for circular motion is provided by ……………. M2.01 U 4 Moment of inertia of a thin uniform rod of length l and mass M, about an axis passing through its centre and perpendicular to its M2.02 R length, is ………………… 5 Name a solid lubricant which is used in very heavy machinery M3.01 R 6 Which is the prominent mode of heat transfer in solids? M3.04 R 7 The deformation of the shape of an object without changing its volume is called …………….. M4.01 R 8 The extra energy possessed by the surface layer of a liquid is called ………………. M4.02 R 9 SI unit of coefficient of viscosity is …………………. M4.03 R 1  PART - B II Answer any Eight of the following questions. Each question carries 3 marks. (8x3=24 Marks) Module Cognitive Outcome level 1 State parallelogram law of vector addition. Draw a diagram to illustrate the parallelogram law. M1.03 R 2 Calculate the angular velocity of the second hand of a watch M2.01 A 3 Calculate the power of a drilling machine if it uses 3000 J of energy in 10 seconds. M3.03 A 4 Write one example each for the following energy transformations: (a) Conversion of kinetic energy into potential energy M3.02 U (b) Conversion of light energy into electrical energy (c) Conversion of electrical energy into sound energy 5 Explain the causes of friction M3.01 U 6 Define power. Write the SI unit of power and how it is related to horse power. M3.03 R 7 Differentiate between heat and temperature M3.04 U 8 State Hooke’s law. Write the SI unit of elastic modulus. M4.01 R 9 What is capillarity and how it is related to angle of contact? M4.02 U 10 The radius of a pipe decreases from 6 cm to 4 cm. If the velocity at the wider portion is 5 m/s, calculate the velocity in the narrow M4.03 A portion. 2  PART - C III. Answer all questions. Each question carries 7 marks. (6 x 7 = 42 Marks) Module Cognitive Outcome level 1 Write a note on various types of errors associated with the M1.02 R measurement of physical quantities. OR 2 Explain the recoil of a gun. A bullet of mass 30 g is fired from a 6 kg gun with a velocity of 300 m/s. Find the recoil velocity of the M1.02 A gun. 3 a) Derive the relation between linear velocity and angular velocity. b) Define angular acceleration. Derive the relation between M2.01 U linear acceleration and angular acceleration. OR 4 Write a note on the moment of inertia and radius of gyration of a M2.02 R rotating rigid body. 5 Explain the resolution of a vector with a diagram. Discuss one real-life example of the resolution of vectors. M1.03 U OR 6 Explain why the outer edge of the road is raised above the inner edge of the road at curves. Derive the expression for angle of M2.01 U banking. 7 State law of conservation of energy and prove it in the case of a freely falling body. M3.02 U OR 8 Write a note on heat transfer by convection and radiation. M3.04 R 9 Discuss the elastic modulus related to length elasticity. A metal wire of length 4 m and radius 1 mm is stretched by a load of 8 kg at one end and keeping the other end fixed to a ceiling. Find the extension M4.01 A produced if Young’s modulus of the material of the wire is 9 x 1010 N/m2. OR 10 Explain the idea of surface tension and discuss an application of M4.02 U surface tension. 11 Discuss the working of (a) mercury thermometer and (b) pyrometer. M3.04 U OR 12 Derive the equation of continuity for a fluid flowing through a pipe of varying cross section. Explain the principle of continuity M4.04 U with an example. ************* 3